Because this case has an irregular shape, UPS treats it as a "special item". On a recent trip, I packed my bike in the RoundTrip Sport and my daughter's bike in a cardboard bike box. Both bikes were shipped UPS Ground. Her bike shipped for $75, mine was $175. To check as baggage on Delta it's $150. I'm really not sure why I have it as I can't afford to use it.

A large Mtn bike will have to be completely dismantled to fit in box. Fork must be removed, frt brake removed from handle bar, discs removed from wheels to prevent damage. You must be proficient at bike maintenance to use this box. It can be done but be prepared.